release: v0.1.0

wip: v0.3.0 arch — episode-first recall, temporal boost, sprint4 optimizations

feat: Phase 2-4 optimizations — reranker, chunker, recall, embeddings, PyInstaller bundle

docs: add layered copilot instructions

docs: expand v0.1.0 release notes

docs: prepare initial public release

Initialize qmemory for independent validation